Insert_id

In this article, we will focus on the mysqli_insert_id() function in PHP, which is used to retrieve the ID generated by the previous INSERT query. We will provide you with an overview of the function, how it works, and examples of its use.

Introduction to the mysqli_insert_id() function

The mysqli_insert_id() function is a built-in function in PHP that is used to retrieve the ID generated by the previous INSERT query. This function is useful when you need to get the ID of the most recently added row to a table with an auto-incrementing ID field.

How to use the mysqli_insert_id() function

Using the mysqli_insert_id() function is very simple. You just need to call the function on a valid MySQLi connection. Here is an example:

<?php
$mysqli = mysqli_connect("localhost", "username", "password", "database");

mysqli_query($mysqli, "INSERT INTO table_name (column1, column2, column3) VALUES ('value1', 'value2', 'value3')");

$id = mysqli_insert_id($mysqli);

echo "Last inserted ID is: " . $id;

mysqli_close($mysqli);
?>

In this example, we call the mysqli_connect() function to connect to a MySQL database with a username and password. We then execute an INSERT query using the mysqli_query() function. We then call the mysqli_insert_id() function on the MySQLi connection to get the ID of the most recently added row. We then output the ID using the echo statement.

Conclusion

In conclusion, the mysqli_insert_id() function is a useful tool for retrieving the ID generated by the previous INSERT query. By understanding how to use the function, you can take advantage of this feature to create powerful and flexible MySQLi queries.